A device for measuring a flow of a medium through a pipe, wherein the device includes multiple pitot tubes and multiple sensing units, each of the pitot tubes has a respective total pressure outlet and a respective static pressure outlet, each of the sensing units has a respective total pressure inlet and a respective static pressure inlet, all of the total pressure outlets are fluidly connected to all of the total pressure inlets by respective first connection lines, all of the static pressure outlets are fluidly connected to all of the static pressure inlets by respective second connection lines, and each of the sensing units is configured to determine the flow of the medium through the pipe by comparing the pressures at the respective total pressure inlet and the respective static pressure inlet with each other.

A device for measuring a flow of a medium through a pipe, wherein the device includes multiple pitot tubes and multiple sensing units, each of the pitot tubes has a respective total pressure outlet and a respective static pressure outlet, each of the sensing units has a respective total pressure inlet and a respective static pressure inlet, all of the total pressure outlets are fluidly connected to all of the total pressure inlets by respective first connection lines, all of the static pressure outlets are fluidly connected to all of the static pressure inlets by respective second connection lines, and each of the sensing units is configured to determine the flow of the medium through the pipe by comparing the pressures at the respective total pressure inlet and the respective static pressure inlet with each other.

A method for calibrating a product fluid flow valve disposed along a flow path in a site duct, and including damper blades, an actuator coupled thereto, a differential pressure sensor, and a blade controller adapted to define adjustable product flow apertures, comprising the steps: with a calibration fluid flow valve in a calibration duct remote from the product fluid flow valve, and characterized by a geometric shape and operational parameters corresponding to those of the product fluid flow valve, and with a calibration controller, establishing a plurality of calibration conditions including pressure drop across the calibration blades and area of the calibration apertures, determining a calibration flow rate (CFM) function, transferring the CFM function to the product blade controller and adjusting the adjustable product flow apertures so that a parameter set point is attained. In a form, fluid flowing through the product flow apertures forms a vena contracta.

A fluid probe includes a heat spreader structure that defines therein a fluid chamber that is in fluid communication with an external environment of the probe, and a thermal energy source in thermal communication with the heat spreader structure. The heat spreader structure may be made from heat pipes, which function as both temperature-control elements and structural elements. The thermal coupling of the heat spreader structure and the thermal energy source may be used to transfer heat between the two, heating, cooling, and/or maintaining temperature of the heat spreader structure. The fluid probe may have any of a variety of uses, for example being a pitot tube for an aircraft, a fluid sampling device, a medical device, or a device for injecting a fluid.

A fluid probe includes a heat spreader structure that defines therein a fluid chamber that is in fluid communication with an external environment of the probe, and a thermal energy source in thermal communication with the heat spreader structure. The heat spreader structure may be made from heat pipes, which function as both temperature-control elements and structural elements. The thermal coupling of the heat spreader structure and the thermal energy source may be used to transfer heat between the two, heating, cooling, and/or maintaining temperature of the heat spreader structure. The fluid probe may have any of a variety of uses, for example being a pitot tube for an aircraft, a fluid sampling device, a medical device, or a device for injecting a fluid.

A multi-function air data probe comprises a probe stem having an outer surface that extends between a first end and an opposite second end, with the probe stem having a first cross-sectional diameter; and a probe head having an outer surface that extends between a proximal end and a distal end, wherein the proximal end of the probe head is coupled to the first end of the probe stem. The probe head has a second cross-sectional diameter that is larger than the first cross-sectional diameter of the probe stem. A plurality of multi-hole ports is located in the probe head, with the multi-hole ports extending into and through the probe stem. The air data probe is operative to make measurements used to determine one or more of angle of attack values, total pressure values, and static pressure values.

A multi-function air data probe comprises a probe stem having an outer surface that extends between a first end and an opposite second end, with the probe stem having a first cross-sectional diameter; and a probe head having an outer surface that extends between a proximal end and a distal end, wherein the proximal end of the probe head is coupled to the first end of the probe stem. The probe head has a second cross-sectional diameter that is larger than the first cross-sectional diameter of the probe stem. A plurality of multi-hole ports is located in the probe head, with the multi-hole ports extending into and through the probe stem. The air data probe is operative to make measurements used to determine one or more of angle of attack values, total pressure values, and static pressure values.

An intelligent self-balancing downstream device (e.g., air fixture or diffuser) that can obtain accurate flow measurements that can be used to perform the self-balancing in situ and during operation to satisfy a set point. The downstream device may be controllable by a single software system or network accessible locally on site or remotely off site. The downstream device can operate in a single zone or be coupled with multiple like apparatuses for multi-zone operation. It is a high turndown ratio and self-balances, which can allow for continuous commissioning with built-in fault diagnostic systems and that may be used as a supply, return, or exhaust system, or a combination thereof. The downstream device can include multi-stage airflow control systems that operate progressively based on unique actuation mechanisms and/or algorithms that allow for precise flow control and feedback to self-balance and commission the system.

The LFFC technology allows for accurate measurement and metering of fluids in a HVAC system-based on parameters such as pressure, velocity, volume, particles, and temperature. A procedure in a processor allows for the calibration of the aperture devices thru various methods in real time based on the actual system performance. The fluid aperture device calibration curves can be developed in a lab environment, on calibrated flow stands and/or field calibration methods using adaptive learning software based on sensor data. The procedure can rely on calibration curves, characterizations, equations, predictive analysis, machine learning, artificial intelligence, simulation software, calibrated flow stands, duplicating environmental conditions, various sensor data and programming software executed by a processor or system software. Upstream and downstream reference points for temperature, flow, particles, and pressure can be used as additional data to auto calibrate/commission the system thru the software.

A system for detecting the operational status of ground engaging tools for agricultural implements includes an agricultural implement including a frame and a ground engaging tool coupled to the frame. The system further includes one or more sensors supported relative to the frame. The sensor(s) are configured to capture data indicative of a fluid flow past the ground engaging tool as the agricultural implement is moved across the field. The system further includes a controller configured to monitor the data received from the sensor(s) and identify an operational status of the ground engaging tool based at least in part on a comparison between one or more monitored values associated with the fluid flow past the ground engaging tool as the agricultural implement is moved across the field and a predetermined threshold value.